Gates is desperate to sever his ties with Jackie after being duped into covering up her crime, but he is plunged into an even more dangerous situation as Arnott and Fleming close in on his secret and is forced to choose between his marriage and his career. Crime thriller about a detective sergeant working in anti-corruption who is assigned to investigate a respected senior officer. Starring Lennie James, Martin Compston, Vicky McClure, Neil Morrissey and Gina McKee.